GO WITH THE TURBO ! I HAVE A G20 WITH A SR20DE THAT I MADE TURBO AND SWAPED A FIVE SPEED IN. I WILL NEVER GO BACK! IT WOULD BE CHEAPER AND EASIER IF YOU GOT A TURBO KIT AND PUT THAT ON YOUR MOTOR YOU HAVE NOW. OR YOU COULD GET A USED DET WITH WHO KNOWS HOW MANY MILES ON IT AND PUT THAT IN YOUR CAR BUT ITS ALOT OF WORK. EITHER WAY ITS GOING TO BE SOME WORK. GOOD LUCK!